and so the intellectual activities of the human being, what we might even term its spiritual activities, are always the activities of a human being, body and soul combined. Not only that, they are always the activities of this individual human being. The Averroist problem was: how can the human soul be so intimately united with the body as to be its substantial form, and yet have one of its powers so separate from the body that that power can have intellectual knowledge? Aquinas believed the answer